This conclusion presents some closing thoughts on the key concepts discussed in the preceding chapters of this book. The book highlights a different dimension of sustainability, from the traditional approach to environmental viability of development and corporate social responsibility to the more modern views of circular economy and business innovation. It aims to discuss the concept by examining various aspects of how renewable resource management in the energy sector can contribute to the sustainability of the society. The financial dimension of sustainability has emerged as one of the most critical to assure, and the economic viability of many initiatives is often the variable that spells doom on their ultimate success. There are a few common denominators, such as: low per capita income, limited financial infrastructure, increased rates of economic growth, rising and rapid degree of industrialisation and increasing interest from advanced economies.